import java.util.*;

public class MonteCarloSim {
    public static void main(String[] args) {
        final int NUMBER_OF_TRIALS = 100000000;
        int numberOfHits = 0;
        
        for(int i = 0; i < NUMBER_OF_TRIALS; i++) {
            double x = Math.random() * 2.0 - 1;
            double y = Math.random() * 2.0 - 1;
            if(x * x + y * y <= 1)
                numberOfHits++;
        }
        
        double pi = 4.0 * numberOfHits / NUMBER_OF_TRIALS;
        System.out.println("PI ir vienāds ar " + pi);
    }
}